Thread: N55 Carbon Buildup after 70K
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      09-21-2017, 02:20 PM   #3
fiehlsport
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Drives: '13 X1 xDrive35i
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Quote:
Originally Posted by interceptor428 View Post
What fuel are you running, 89 or 90+?
Been running 93 since 36K. But, I don't think fuel has much to do with it. Fuel doesn't come into play until the combustion chamber with DI cars.
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